Designation:D5910−05(Reapproved2012)StandardTestMethodforDeterminationofFreeFormaldehydeinEmulsionPolymersbyLiquidChromatography1ThisstandardisissuedunderthefixeddesignationD5910;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodisusedforthedeterminationoffreeformaldehyde(HCHO)inemulsionpolymerswithoutupset-tingexistingformaldehydeequilibria.Theprocedurehasbeenevaluatedusingacrylic,acrylonitrile-butadiene,carboxylatedstyrene-butadieneandpolyvinylacetateemulsionpolymers.Thistestmethodmayalsobeapplicableforemulsionpolymersofothercompositions.Theestablishedworkingrangeofthistestmethodisfrom0.05to15ppmformaldehyde.Emulsionpolymersmustbedilutedtomeettheworkingrange.1.2Thistestmethodminimizeschangesinfreeformalde-hydeconcentrationthatcanresultfromchangesinthephysicalorchemicalpropertiesofanemulsionpolymer.1.3Therearenoknownlimitationstothistestmethodwhenusedinthemannerdescribed.TheemulsionpolymertestspecimenmustbepreparedwithadiluentthathasapHsimilartothatoftheemulsion.UseofaninappropriatepHmayupsetformaldehydeequilibriaandresultinincorrectformaldehydelevels.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D1193SpecificationforReagentWaterD2194TestMethodforConcentrationofFormaldehydeSolutionsE180PracticeforDeterminingthePrecisionofASTMMethodsforAnalysisandTestingofIndustrialandSpe-cialtyChemicals(Withdrawn2009)3E682PracticeforLiquidChromatographyTermsandRela-tionships3.SummaryofTestMethod3.1Theaqueousphaseofanem...
